
Dunedin, a coastal city known for its temperate oceanic climate, has recently experienced an unusually cold snap, with temperatures plunging to -5.1°C. This striking low is only 2.9°C shy of Dunedin’s all-time recorded temperature, highlighting how rare and significant this cold event is for the city.
❄️ An Unexpected Cold Front in Southern New Zealand
Dunedin’s climate typically features mild winters, with average lows rarely dipping below freezing. A temperature of -5.1°C is thus a remarkable occurrence, especially in mid-June, early winter for the Southern Hemisphere.
The city’s all-time coldest temperature stands at -8.0°C in June 1974, recorded decades ago. The recent -5.1°C marks one of the coldest June temperatures in recent memory and has sparked interest among meteorologists and residents alike.
🌡️ What Caused This Cold Temperature?
This cold spell is attributed to several factors:
- A strong high-pressure system over the South Island, leading to clear skies and calm conditions overnight.
- Radiative cooling, where heat escapes rapidly from the surface under clear skies, dropping temperatures significantly.
- The influence of cold air masses descending from the Southern Alps into the Otago region, chilling the air further.
🌍 Impacts on the City and Surrounding Areas
While Dunedin is no stranger to cooler weather, temperatures this low can affect various aspects of life:
- Agriculture: Frosts can damage crops and delay planting schedules in the region.
- Transport: Cold conditions can create icy roads, posing hazards for drivers.
- Energy demand: Increased heating needs put extra strain on local energy supplies.
- Public health: Vulnerable populations may face increased risks from cold exposure.
📊 Dunedin’s Climate Context
Dunedin’s oceanic climate usually keeps temperature extremes in check, with warm summers and cool, but rarely freezing, winters. This recent dip to -5.1°C is a reminder of the variability in local weather and the potential for cold snaps even in temperate maritime regions.
eather changes — even in typically mild climates.

Source: https://en.wikipedia.org/wiki/Dunedin

Illustration picture: https://www.viator.com/tours/Dunedin-and-The-Otago-Peninsula/Otago-Peninsula-Guided-Coastal-Walk-Including-the-Chasm-and-Lovers-Leap/d758-6586DND3